John Lennon was a British musician, singer, songwriter and artist born in 1940 in Liverpool, England. He was a founding member of the legendary rock band The Beatles and is considered one of the most influential musicians of the 20th century. Lennon was tragically shot and killed in New York City in 1980 at the young age of 40. Some of his most famous songs include "Imagine," a timeless anthem calling for world peace and unity.